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Dan Rammer
cdebea118d
## Summary
The sync `RemoteTable` carried `set_lsm_write_spec`,
`unset_lsm_write_spec`, `get_lsm_write_spec`, and `close_lsm_writers`,
but not `checkpoint_lsm`, `flush_lsm`, `compact_lsm`, or
`get_lsm_stats`.
That left the four LSM control methods reachable from `AsyncTable` only.
They are also the four that *only* work against a remote table —
`NativeTable` does not override the `BaseTable` defaults, so on a local
table they return `NotSupported` (`rust/lancedb/src/table.rs:679-701`).
The net effect for sync users:
| | `checkpoint_lsm` / `get_lsm_stats` |
|---|---|
| `LanceTable` (sync, local) | present, but always `NotSupported` |
| `RemoteTable` (sync, remote) | `AttributeError` — method absent |
| `AsyncTable` (remote) | works |
So there was no working sync path at all, despite the Rust `RemoteTable`
implementing every one of these against real endpoints.
## Changes
* Add `checkpoint_lsm`, `flush_lsm`, `compact_lsm`, and `get_lsm_stats`
to `lancedb.remote.table.RemoteTable`, mirroring the delegation style of
their neighbours.
* Correct the docstrings on `set_lsm_write_spec` /
`unset_lsm_write_spec`, which read `"""Not supported on LanceDB
Cloud."""` although `rust/lancedb/src/remote/table.rs:2549-2601`
implements both against `/v1/table/{}/set_lsm_write_spec/` and
`/unset_lsm_write_spec/`. They appear to have been copy-pasted from
`set_unenforced_primary_key` directly above.
No Rust or PyO3 changes — the bindings and the `AsyncTable` methods
already existed. The `Table` ABC is left alone, matching how the
existing `*_lsm_write_spec` methods are declared on the concrete classes
only.
## Tests
Four new tests in `python/python/tests/test_remote_db.py`, against the
existing mock HTTP server:
* `test_get_lsm_stats_sync` — the server payload round-trips into the
dict, and `include_generation_rows` defaults to `False` and is forwarded
when set.
* `test_get_lsm_stats_sync_returns_none_when_lsm_disabled` — a
`{"lsm_stats": null}` envelope yields `None` rather than an error.
* `test_flush_and_compact_lsm_sync` — both are one-shot POSTs answered
`202` with no body.
* `test_checkpoint_lsm_sync` — pins the binding to the endpoints it
drives (`flush_lsm` then `get_lsm_stats`); the convergence loop itself
is already covered in Rust.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
The Multimodal AI Lakehouse
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The ultimate multimodal data platform for AI/ML applications.
LanceDB is designed for fast, scalable, and production-ready vector search. It is built on top of the Lance columnar format. You can store, index, and search over petabytes of multimodal data and vectors with ease. LanceDB is a central location where developers can build, train and analyze their AI workloads.
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How to Install:
Follow the Quickstart doc to set up LanceDB locally.
API & SDK: We also support Python, Typescript and Rust SDKs
| Interface | Documentation |
|---|---|
| Python SDK | https://lancedb.github.io/lancedb/python/python/ |
| Typescript SDK | https://lancedb.github.io/lancedb/js/globals/ |
| Rust SDK | https://docs.rs/lancedb/latest/lancedb/index.html |
| REST API | https://docs.lancedb.com/api-reference/rest |
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